Q1781.Choose the correct one-word substitution:
A person who believes that all forms of government or authority should be abolished.
- AConformist
- BAnarchist
- CPessimist
- DTraditionalist
Show answer
Concept: Anarchist = one who wants all government/authority abolished.
- Root: an- (without) + archy (rule) → "without rule".
- Conformist follows rules; traditionalist keeps old customs; pessimist expects the worst.
Trick: -archy = rule: monarchy (one ruler), oligarchy (few), anarchy (none).
Answer: (B) Anarchist
अवधारणा: Anarchist = जो हर प्रकार की सरकार/सत्ता को समाप्त करना चाहे (अराजकतावादी)।
- an- (बिना) + archy (शासन) → "बिना शासन"।
- Conformist नियम मानता है; Traditionalist परंपरा; Pessimist निराशावादी।
ट्रिक: -archy = शासन: monarchy (एक), oligarchy (कुछ), anarchy (कोई नहीं)।
उत्तर: (B) Anarchist
Q1782.Choose the correct spelling.
- AEsoterica
- BEsotericca
- CEsotiriica
- DEsotarica
Show answer
Concept: Esoterica = things understood only by a small, specialised group.
- Built from "esoteric" + a: E-S-O-T-E-R-I-C-A.
- Single c, vowels o–e–i.
Trick: If you can spell "esoteric", just add "a".
Answer: (A) Esoterica
अवधारणा: Esoterica = ऐसी बातें/वस्तुएँ जिन्हें कुछ विशेष लोग ही समझते हैं।
- "esoteric" + a: E-S-O-T-E-R-I-C-A।
- एक c, स्वर क्रम o–e–i।
ट्रिक: "esoteric" की spelling आती है तो बस "a" जोड़ दो।
उत्तर: (A) Esoterica
Q1783.Choose the correct one-word substitute for:
'A record of one's life written by someone else.'
- ABiography
- BMemorandum
- CMemoir
- DAutobiography
Show answer
Concept: Biography = life story written by another person.
- Autobiography = written by the person himself (auto = self).
- Memoir = personal recollections; memorandum = official note.
Trick: bio = life, graphy = writing; add "auto" only when the writer is the subject.
Answer: (A) Biography
अवधारणा: Biography = किसी के जीवन का वृत्तांत जो दूसरा व्यक्ति लिखे (जीवनी)।
- Autobiography = स्वयं लिखी (auto = स्वयं) – आत्मकथा।
- Memoir = संस्मरण; Memorandum = कार्यालयी नोट।
ट्रिक: bio = जीवन, graphy = लेखन; "auto" तभी जब लेखक स्वयं विषय हो।
उत्तर: (A) Biography
Q1784.Select the most appropriate option to fill in the blank.
____ his rigorous training, the athlete struggled to complete the marathon.
- AAs a result of
- BBy dint of
- CDue to
- DDespite
Show answer
Concept: Use a contrast word when the result is opposite to what is expected.
- Rigorous training should help, yet he struggled → contrast.
- "Despite" = in spite of → correct.
- "As a result of", "due to", "by dint of" show cause – wrong sense.
Trick: Expected ≠ actual → think Despite / In spite of / Although.
Answer: (D) Despite
अवधारणा: जब परिणाम अपेक्षा के उलट हो तो विरोधसूचक शब्द लगता है।
- कड़ी ट्रेनिंग से मदद मिलनी चाहिए थी, फिर भी संघर्ष हुआ → विरोध।
- "Despite" = के बावजूद → सही।
- "As a result of", "Due to", "By dint of" कारण बताते हैं – अर्थ उल्टा।
ट्रिक: अपेक्षा ≠ परिणाम → Despite / In spite of / Although सोचो।
उत्तर: (D) Despite
Q1785.Choose the correct meaning of the idiom:
He had to eat crow after his plan completely failed.
- AEnjoy luxurious food
- BGive lavish charity
- CSuffer physical punishment
- DAdmit one's error and endure humiliation
Show answer
Concept: "Eat crow" = to admit one was wrong and suffer embarrassment.
- His plan failed, so he had to accept his mistake publicly.
- It has nothing to do with real food, charity or punishment.
Yaad rakhein: Similar: "eat humble pie" – also means admitting a mistake humbly.
Answer: (D) Admit one's error and endure humiliation
अवधारणा: "Eat crow" = अपनी गलती मानना और शर्मिंदगी झेलना।
- योजना विफल होने पर उसे अपनी गलती स्वीकारनी पड़ी।
- इसका भोजन, दान या दंड से कोई संबंध नहीं।
याद रखें: समान idiom: "eat humble pie" – विनम्रता से गलती मानना।
उत्तर: (D) Admit one's error and endure humiliation
Q1786.Select the correct indirect/direct form of the given sentence.
The teacher said, "You will have left this school before I resign."
- AThe teacher warned that you would have left this school before I resigned.
- BThe teacher told that you would have left this school before I resigned.
- CThe teacher said that they will have resigned from this school before he left.
- DThe teacher said that they would have left that school before he resigned.
Show answer
Concept: Past reporting verb → backshift tense; change pronouns and "this" → "that".
- "will have left" → "would have left"; "resign" → "resigned".
- "You" (listeners) → they; "I" (teacher) → he; "this school" → "that school".
- Result: The teacher said that they would have left that school before he resigned.
Trick: Quick filter: "this" must become "that" – only (D) has "that school".
Answer: (D) The teacher said that they would have left that school before he resigned.
अवधारणा: Reporting verb भूतकाल में हो तो tense पीछे खिसकता है; pronouns बदलते हैं, "this" → "that"।
- "will have left" → "would have left"; "resign" → "resigned"।
- "You" → they; "I" (teacher) → he; "this school" → "that school"।
- अतः: The teacher said that they would have left that school before he resigned.
ट्रिक: तुरंत छाँटो: "this" का "that" होना ज़रूरी – केवल (D) में "that school" है।
उत्तर: (D) The teacher said that they would have left that school before he resigned.
Q1787.Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph:
1. This enables the machine to store and retrieve data quickly, which is essential for fast operation.
2. Random Access Memory (RAM) plays a crucial role in a computer's overall performance.
3. Unlike long-term storage, RAM holds data that the CPU needs to access immediately for active tasks.
4. Without sufficient RAM, a computer would slow down significantly, regardless of its processor speed.
- A2, 3, 1, 4
- B3, 1, 2, 4
- C2, 4, 1, 3
- D1, 2, 3, 4
Show answer
Concept: Start with the topic sentence, then definition, effect, and conclusion.
- 2 introduces RAM and its importance – opener.
- 3 tells what RAM holds; 1 begins "This enables…", referring to 3.
- 4 gives the result of too little RAM – closing line.
Trick: A sentence starting with "This" can never open a paragraph – removes option (D) at once.
Answer: (A) 2, 3, 1, 4
अवधारणा: पहले विषय-वाक्य, फिर परिभाषा, प्रभाव और निष्कर्ष।
- 2 RAM और उसका महत्त्व बताता है – पहला वाक्य।
- 3 बताता है RAM क्या रखती है; 1 "This enables…" से 3 का संदर्भ लेता है।
- 4 कम RAM का परिणाम – अंतिम वाक्य।
ट्रिक: "This" से शुरू होने वाला वाक्य पहला नहीं हो सकता – (D) तुरंत हटता है।
उत्तर: (A) 2, 3, 1, 4
Q1788.The following sentence has been divided into parts. One of them contains an error. Select the part that contains the error from the given options.
That the expedition faced unforeseen challenges (1)/ in the treacherous mountain terrain (2)/ were evident from their delayed return (3)/ and exhausted appearance. (4)
- A(1)
- B(2)
- C(3)
- D(4)
Show answer
Concept: A noun clause used as subject takes a singular verb.
- Subject: "That the expedition faced unforeseen challenges…" – one clause.
- So "were evident" → "was evident".
- Error in part (3).
Trick: Don't let the plural "challenges" fool you – the whole "That…" clause is one idea = singular.
Answer: (C) (3)
अवधारणा: Subject के रूप में आया noun clause singular verb लेता है।
- Subject: "That the expedition faced unforeseen challenges…" – एक clause।
- अतः "were evident" → "was evident"।
- त्रुटि भाग (3) में।
ट्रिक: plural "challenges" से भ्रमित न हों – पूरा "That…" clause एक विचार = singular।
उत्तर: (C) (3)
Q1789.Select the option that expresses the given sentence in the Active/Passive voice.
The researchers may publish their findings next month.
- ATheir findings might be published by the researchers next month.
- BTheir findings may be published by the researchers next month.
- CTheir findings are published by the researchers next month.
- DTheir findings could be published by the researchers next month.
Show answer
Concept: Modal passive = modal + be + V3; the modal itself does not change.
- Object "their findings" becomes subject.
- "may publish" → "may be published".
- Their findings may be published by the researchers next month.
Trick: Keep the same modal: may stays may (not might/could), so (B).
Answer: (B) Their findings may be published by the researchers next month.
अवधारणा: Modal वाले passive में: modal + be + V3; modal नहीं बदलता।
- Object "their findings" subject बनता है।
- "may publish" → "may be published"।
- Their findings may be published by the researchers next month.
ट्रिक: वही modal रखो: may → may (might/could नहीं), अतः (B)।
उत्तर: (B) Their findings may be published by the researchers next month.
Q1790.The following sentence has been divided into parts. One of them contains an error. Select the part that contains the error from the given options.
The sudden influx of tourists, (1)/ attracted by the newly opened resort, (2)/ have caused significant strain (3)/ on the local infrastructure. (4)
- A(1)
- B(2)
- C(3)
- D(4)
Show answer
Concept: The verb agrees with the main noun, not with the "of…" phrase.
- Main subject: "The sudden influx" – singular.
- "of tourists" is only a modifier.
- "have caused" → "has caused"; error in part (3).
Trick: Cover the "of …" phrase and the comma-phrase: "The influx … has caused".
Answer: (C) (3)
अवधारणा: Verb मुख्य noun से मेल खाती है, "of…" वाले phrase से नहीं।
- मुख्य subject: "The sudden influx" – singular।
- "of tourists" केवल विशेषण-phrase है।
- "have caused" → "has caused"; त्रुटि भाग (3) में।
ट्रिक: "of…" phrase और comma-phrase ढक दो: "The influx … has caused"।
उत्तर: (C) (3)
Q1791.Select the sentence containing the homonym of the highlighted word:
The philosopher's tenure at the institution became legendary.
- AHe lost his tenure because of academic misconduct.
- BThe lease agreement specifies the tenure in its clauses.
- CThe sculptor captured the tenure of pain in his marble work.
- DActivists challenged the colonial tenure laws.
Show answer
Concept: A homonym has the same form but a different meaning.
- In the given sentence, "tenure" = period of holding a post.
- (A), (B), (D) use it in the same sense of a term/holding (job tenure, lease tenure, land tenure).
- In (C) it describes the sustained quality or tone of pain in art – a different meaning, so it is the homonym.
Trick: Pick the sentence where the word cannot be replaced by "term/period of holding".
Answer: (C) The sculptor captured the tenure of pain in his marble work.
अवधारणा: Homonym – रूप समान, पर अर्थ अलग।
- दिए वाक्य में "tenure" = पद पर रहने की अवधि, कार्यकाल।
- (A), (B), (D) में भी इसी अर्थ (कार्यकाल/पट्टे की अवधि/भू-धारण) में प्रयोग।
- (C) में यह कला में दर्द के भाव/स्वर के लिए प्रयुक्त है – अलग अर्थ, अतः homonym।
ट्रिक: वह वाक्य चुनो जहाँ "term/अवधि" से शब्द बदला न जा सके।
उत्तर: (C) The sculptor captured the tenure of pain in his marble work.
Q1792.Select the option that expresses the given sentence in the Active/Passive voice.
It is hoped that a lasting peace agreement will be reached soon.
- AWe hope that a lasting peace agreement will be reached soon.
- BThey hope that a lasting peace agreement will be reached soon.
- CEveryone hopes to reach a lasting peace agreement soon.
- DPeople hope that they will reach a lasting peace agreement soon.
Show answer
Concept: "It is hoped that…" → "People hope that…"; the inner passive also becomes active.
- "It is hoped" → "People hope".
- "a peace agreement will be reached" → "they will reach a peace agreement".
- Both clauses active only in (D).
Trick: Check both clauses: (A) and (B) still have "will be reached" – reject.
Answer: (D) People hope that they will reach a lasting peace agreement soon.
अवधारणा: "It is hoped that…" → "People hope that…"; अंदर का passive भी active बनता है।
- "It is hoped" → "People hope"।
- "will be reached" → "they will reach"।
- दोनों clause active केवल (D) में।
ट्रिक: दोनों clause जाँचो: (A) और (B) में अभी भी "will be reached" है – हटाओ।
उत्तर: (D) People hope that they will reach a lasting peace agreement soon.
Q1793.Select the most appropriate option to substitute the underline/Bold segment in the given sentence.
He is capable for handling of the complex project.
- Aof handling
- Bto handle
- Cin handling
- Dby handling
Show answer
Concept: "Capable" takes the preposition "of" + gerund (V-ing).
- "capable for handling of" is wrong on two counts.
- Correct: "He is capable of handling the complex project."
Trick: Fixed pairs: capable of, able to – never "capable to" or "able of".
Answer: (A) of handling
अवधारणा: "Capable" के साथ "of" + gerund (V-ing) आता है।
- "capable for handling of" दो तरह से गलत है।
- सही: "He is capable of handling the complex project."
ट्रिक: स्थिर जोड़े: capable of, able to – "capable to" या "able of" कभी नहीं।
उत्तर: (A) of handling
Q1794.Select the correct indirect/direct form of the given sentence.
The director explained that the project needed more funding, and the deadline had to be extended.
- AThe director said, "The project needs more funding, and the deadline has to be extended."
- BThe director said, "The project needed more funding, and the deadline has to be extended."
- CThe director said, "The project needs more funding, and the deadline had to be extended."
- DThe director explained, "The project needed more funding, and the deadline will be extended."
Show answer
Concept: Going back to direct speech, undo the backshift: past → present.
- "needed" → "needs".
- "had to be extended" → "has to be extended".
- Both changes appear only in (A).
Trick: Both clauses must shift together – any option mixing past and present is out.
Answer: (A) The director said, "The project needs more funding, and the deadline has to be extended."
अवधारणा: Direct speech में लौटते समय tense वापस आगे लाओ: past → present।
- "needed" → "needs"।
- "had to be extended" → "has to be extended"।
- दोनों बदलाव केवल (A) में।
ट्रिक: दोनों clause साथ बदलने चाहिए – past और present मिलाने वाला विकल्प गलत।
उत्तर: (A) The director said, "The project needs more funding, and the deadline has to be extended."
Q1795.Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph:
1. Machine learning, a subset of Artificial Intelligence, is rapidly gaining prominence.
2. This enables machines to learn from data without explicit programming.
3. Consequently, it finds applications in diverse fields, from healthcare to finance.
4. Algorithms are trained on vast datasets to recognize patterns and make predictions.
- A1-3-4-2
- B1-4-2-3
- C3-1-2-4
- D1-2-3-4
Show answer
Concept: Follow the flow: introduce → method → result → application.
- 1 introduces machine learning – opener.
- 4 explains the training of algorithms; 2 "This enables…" follows it.
- 3 "Consequently…" gives applications – conclusion.
Trick: Link words decide the order: "This" needs a sentence before it; "Consequently" usually comes last.
Answer: (B) 1-4-2-3
अवधारणा: क्रम: परिचय → विधि → परिणाम → उपयोग।
- 1 machine learning का परिचय – पहला वाक्य।
- 4 algorithms की training बताता है; 2 "This enables…" इसके बाद।
- 3 "Consequently…" उपयोग बताता है – अंत।
ट्रिक: जोड़ने वाले शब्द क्रम तय करते हैं: "This" से पहले वाक्य चाहिए; "Consequently" प्रायः अंत में।
उत्तर: (B) 1-4-2-3
Directions (Qs. 96-100): Read the following passage carefully and answer the questions that follow.
Deep beneath the ocean's surface lies one of the least explored frontiers on Earth — the abyssal plain. Stretching across vast regions of the seabed, these flat, dark expanses are home to an array of organisms uniquely adapted to conditions of crushing pressure, perpetual darkness and scarce food supply. Life here thrives not on sunlight but on chemical energy derived from hydrothermal vents, where mineral-rich fluids gush from the Earth's crust. Around these vents, chemosynthetic bacteria form the foundation of an entire ecosystem, sustaining giant tube worms, blind shrimp and specialised crabs. The discovery of these vent-based ecosystems in the late 20th century revolutionised our understanding of life itself, challenging the long-held notion that sunlight was essential for biological productivity. The study of such organisms has also deepened scientific insight into possible extraterrestrial life, particularly on icy moons like Europa and Enceladus, where similar energy sources may exist beneath frozen crusts. Yet the growing interest in deep-sea mining threatens to disturb these fragile habitats. Extraction of minerals such as cobalt, nickel and rare earth elements could irreversibly damage ecosystems that have taken millennia to evolve. Scientists urge that conservation and research must precede exploitation, ensuring that curiosity does not turn into destruction.
Q1796.What role do hydrothermal vents play in the deep-sea ecosystem?
- AThey act as shelters for marine creatures.
- BThey supply mineral-rich fluids that support chemosynthetic life.
- CThey provide oxygen for photosynthetic organisms.
- DThey function as geological traps for sediments.
Show answer
Concept: Answer from what the passage directly states.
- Vents release mineral-rich fluids from the Earth's crust.
- Chemosynthetic bacteria use this chemical energy and form the base of the food web.
- No mention of shelter, oxygen for photosynthesis or sediment traps.
Trick: Look for the option that repeats the passage's key words – "mineral-rich fluids" and "chemosynthetic".
Answer: (B) They supply mineral-rich fluids that support chemosynthetic life.
अवधारणा: उत्तर वही जो गद्यांश में सीधे लिखा है।
- Vents पृथ्वी की परत से खनिज-युक्त द्रव छोड़ते हैं।
- Chemosynthetic बैक्टीरिया इसी रासायनिक ऊर्जा से खाद्य-श्रृंखला का आधार बनते हैं।
- आश्रय, ऑक्सीजन या तलछट का कोई उल्लेख नहीं।
ट्रिक: वह विकल्प खोजो जिसमें गद्यांश के मुख्य शब्द हों – "mineral-rich fluids", "chemosynthetic"।
उत्तर: (B) They supply mineral-rich fluids that support chemosynthetic life.
Directions (Qs. 96-100): Read the following passage carefully and answer the questions that follow.
Deep beneath the ocean's surface lies one of the least explored frontiers on Earth — the abyssal plain. Stretching across vast regions of the seabed, these flat, dark expanses are home to an array of organisms uniquely adapted to conditions of crushing pressure, perpetual darkness and scarce food supply. Life here thrives not on sunlight but on chemical energy derived from hydrothermal vents, where mineral-rich fluids gush from the Earth's crust. Around these vents, chemosynthetic bacteria form the foundation of an entire ecosystem, sustaining giant tube worms, blind shrimp and specialised crabs. The discovery of these vent-based ecosystems in the late 20th century revolutionised our understanding of life itself, challenging the long-held notion that sunlight was essential for biological productivity. The study of such organisms has also deepened scientific insight into possible extraterrestrial life, particularly on icy moons like Europa and Enceladus, where similar energy sources may exist beneath frozen crusts. Yet the growing interest in deep-sea mining threatens to disturb these fragile habitats. Extraction of minerals such as cobalt, nickel and rare earth elements could irreversibly damage ecosystems that have taken millennia to evolve. Scientists urge that conservation and research must precede exploitation, ensuring that curiosity does not turn into destruction.
Q1797.Which scientific assumption was challenged by the discovery of vent-based life forms?
- ALife cannot exist without sunlight.
- BChemical energy is unimportant in biology.
- CDeep-sea exploration is impossible.
- DOnly land organisms use minerals for energy.
Show answer
Concept: Find the "long-held notion" mentioned in the passage.
- The passage says vent life challenged the idea that sunlight was essential for biological productivity.
- These ecosystems run on chemical energy, showing life can exist without sunlight.
Trick: Phrases like "long-held notion/belief" point straight to the answer of assumption questions.
Answer: (A) Life cannot exist without sunlight.
अवधारणा: गद्यांश में बताई "long-held notion" खोजो।
- गद्यांश कहता है vent-जीवन ने इस धारणा को चुनौती दी कि जैविक उत्पादकता के लिए सूर्य-प्रकाश आवश्यक है।
- ये पारितंत्र रासायनिक ऊर्जा पर चलते हैं – यानी बिना धूप के भी जीवन संभव।
ट्रिक: "long-held notion/belief" जैसे शब्द assumption प्रश्नों का सीधा उत्तर दिखाते हैं।
उत्तर: (A) Life cannot exist without sunlight.
Directions (Qs. 96-100): Read the following passage carefully and answer the questions that follow.
Deep beneath the ocean's surface lies one of the least explored frontiers on Earth — the abyssal plain. Stretching across vast regions of the seabed, these flat, dark expanses are home to an array of organisms uniquely adapted to conditions of crushing pressure, perpetual darkness and scarce food supply. Life here thrives not on sunlight but on chemical energy derived from hydrothermal vents, where mineral-rich fluids gush from the Earth's crust. Around these vents, chemosynthetic bacteria form the foundation of an entire ecosystem, sustaining giant tube worms, blind shrimp and specialised crabs. The discovery of these vent-based ecosystems in the late 20th century revolutionised our understanding of life itself, challenging the long-held notion that sunlight was essential for biological productivity. The study of such organisms has also deepened scientific insight into possible extraterrestrial life, particularly on icy moons like Europa and Enceladus, where similar energy sources may exist beneath frozen crusts. Yet the growing interest in deep-sea mining threatens to disturb these fragile habitats. Extraction of minerals such as cobalt, nickel and rare earth elements could irreversibly damage ecosystems that have taken millennia to evolve. Scientists urge that conservation and research must precede exploitation, ensuring that curiosity does not turn into destruction.
Q1798.Why does the author caution against deep-sea mining?
- AIt could cause pollution in coastal waters.
- BIt threatens to destroy delicate and ancient ecosystems.
- CIt produces insufficient economic benefit.
- DIt interferes with undersea communication cables.
Show answer
Concept: Locate the author's reason in the mining part of the passage.
- The author says extracting minerals may cause permanent harm to the deep-sea habitats.
- These ecosystems are fragile and took millennia to evolve → delicate and ancient.
- Coastal pollution, economics and cables are not mentioned.
Trick: Reject options that bring in ideas not present in the passage (A, C, D).
Answer: (B) It threatens to destroy delicate and ancient ecosystems.
अवधारणा: खनन वाले भाग में लेखक का कारण खोजो।
- कोबाल्ट, निकल, दुर्लभ मृदा तत्वों का खनन इन आवासों को "अपूरणीय क्षति" पहुँचा सकता है।
- ये पारितंत्र नाज़ुक हैं और हज़ारों वर्षों में बने → delicate and ancient।
- तटीय प्रदूषण, आर्थिक लाभ, केबल का उल्लेख नहीं।
ट्रिक: जो विकल्प गद्यांश से बाहर की बात लाएँ (A, C, D), उन्हें हटाओ।
उत्तर: (B) It threatens to destroy delicate and ancient ecosystems.
Directions (Qs. 96-100): Read the following passage carefully and answer the questions that follow.
Deep beneath the ocean's surface lies one of the least explored frontiers on Earth — the abyssal plain. Stretching across vast regions of the seabed, these flat, dark expanses are home to an array of organisms uniquely adapted to conditions of crushing pressure, perpetual darkness and scarce food supply. Life here thrives not on sunlight but on chemical energy derived from hydrothermal vents, where mineral-rich fluids gush from the Earth's crust. Around these vents, chemosynthetic bacteria form the foundation of an entire ecosystem, sustaining giant tube worms, blind shrimp and specialised crabs. The discovery of these vent-based ecosystems in the late 20th century revolutionised our understanding of life itself, challenging the long-held notion that sunlight was essential for biological productivity. The study of such organisms has also deepened scientific insight into possible extraterrestrial life, particularly on icy moons like Europa and Enceladus, where similar energy sources may exist beneath frozen crusts. Yet the growing interest in deep-sea mining threatens to disturb these fragile habitats. Extraction of minerals such as cobalt, nickel and rare earth elements could irreversibly damage ecosystems that have taken millennia to evolve. Scientists urge that conservation and research must precede exploitation, ensuring that curiosity does not turn into destruction.
Q1799.What is the closest meaning of the term 'chemosynthetic' in the passage?
- AUsing light energy to make food
- BDepending on decayed organic matter
- CProducing food through chemical reactions
- DFeeding on other organisms
Show answer
Concept: Chemo (chemical) + synthesis (making) = making food using chemical energy.
- The passage contrasts vent life with sunlight-based life.
- So chemosynthetic organisms produce food through chemical reactions.
- Using light energy (A) is photosynthesis – the opposite idea here.
Trick: Split the word: photo = light, chemo = chemical; synthesis = making.
Answer: (C) Producing food through chemical reactions
अवधारणा: Chemo (रसायन) + synthesis (बनाना) = रासायनिक ऊर्जा से भोजन बनाना।
- गद्यांश vent-जीवन को सूर्य-आधारित जीवन से अलग बताता है।
- अतः chemosynthetic जीव रासायनिक क्रियाओं से भोजन बनाते हैं।
- प्रकाश ऊर्जा (A) = photosynthesis – यहाँ उल्टा विचार।
ट्रिक: शब्द तोड़ो: photo = प्रकाश, chemo = रसायन; synthesis = बनाना।
उत्तर: (C) Producing food through chemical reactions
Directions (Qs. 96-100): Read the following passage carefully and answer the questions that follow.
Deep beneath the ocean's surface lies one of the least explored frontiers on Earth — the abyssal plain. Stretching across vast regions of the seabed, these flat, dark expanses are home to an array of organisms uniquely adapted to conditions of crushing pressure, perpetual darkness and scarce food supply. Life here thrives not on sunlight but on chemical energy derived from hydrothermal vents, where mineral-rich fluids gush from the Earth's crust. Around these vents, chemosynthetic bacteria form the foundation of an entire ecosystem, sustaining giant tube worms, blind shrimp and specialised crabs. The discovery of these vent-based ecosystems in the late 20th century revolutionised our understanding of life itself, challenging the long-held notion that sunlight was essential for biological productivity. The study of such organisms has also deepened scientific insight into possible extraterrestrial life, particularly on icy moons like Europa and Enceladus, where similar energy sources may exist beneath frozen crusts. Yet the growing interest in deep-sea mining threatens to disturb these fragile habitats. Extraction of minerals such as cobalt, nickel and rare earth elements could irreversibly damage ecosystems that have taken millennia to evolve. Scientists urge that conservation and research must precede exploitation, ensuring that curiosity does not turn into destruction.
Q1800.Which statement best summarises the central idea of the passage?
- ADeep-sea mining is necessary for technological progress.
- BLife in the ocean depths depends on sunlight and photosynthesis.
- CThe abyssal plain hosts unique ecosystems that rely on chemical energy and need protection.
- DMarine organisms are easily adaptable to environmental changes.
Show answer
Concept: The central idea must cover the whole passage, not one detail.
- First part: unique abyssal ecosystems living on chemical energy.
- Last part: mining threatens them; conservation must come first.
- (C) joins both parts; (B) contradicts the passage; (A) and (D) are not its message.
Trick: For main-idea questions, choose the option that links the beginning and the ending of the passage.
Answer: (C) The abyssal plain hosts unique ecosystems that rely on chemical energy and need protection.
अवधारणा: मुख्य विचार पूरे गद्यांश को समेटे, किसी एक बात को नहीं।
- पहला भाग: रासायनिक ऊर्जा पर चलने वाले अनोखे गहरे-समुद्री पारितंत्र।
- अंतिम भाग: खनन से इन्हें खतरा; पहले संरक्षण ज़रूरी।
- (C) दोनों भाग जोड़ता है; (B) गद्यांश के विपरीत; (A), (D) इसका संदेश नहीं।
ट्रिक: Main idea के लिए वह विकल्प चुनो जो गद्यांश की शुरुआत और अंत दोनों को जोड़े।
उत्तर: (C) The abyssal plain hosts unique ecosystems that rely on chemical energy and need protection.